Engraving-machine.



W. S. EATON.

ENGRAVING MACHINE.

APPLICATION FILED SEPT.19,1910.

1,089,712; Patented 0015.1,1912.

5 SHEETS-SHBET 1.

W. S. EATON.

ENGRAVING MACHINE.

APPLICATION FILED SEPT.19,1910.

Patented Oct. 1, 1912.

84 5 SHEETS-SHEET 2.

W. S. EATON.

ENGRAVING MACHINE.

APPLICATION FILED SEPT.19,1910.

1,039,712. Patented 0ct.1 ,191 2.

5 SEEETS-SHEET 3.

W. S. EATON.

ENGRAVING MACHINE.

APPLIUATION FILED SEPT. 19, 1910.

1,039,712. Patented 0cf.1,1912.

5 SHEETSSHEET 4.

est: [52; Inventor:

j m; by

91m A44, Atty W. .S. EATON.

BNGEAVING MACHINE.

APPLIOATION FILED SEPT. 19, 1910.

Patented 0015.1,1912.

5 SHEETS-SHEET 5.

ventor A A gay/z A est: J

WILLIAM S. EATON, O1, SAG HARBOR, NEW YORK.

mennvme -imonmn.

Specification of Letters Patent.

Application filed September 19, 1910, Serial No. 582,6.i9.

To all whom it may concern:

Be it known that I, WILLIAM S. EA'roN, a citizen of the United States,residing at Sag of New York, have invented certain new and usefulImprovements in Engraving-Machines, of which the followin is aspecification, reference being had t erein to the accompanying drawings,which form a part thereof.

My invention relates to engraving machines and more particularly to atype of pantographical machine.

The main object of the invention is to provide a machine of thepantographic type which will have a large operating range of work, bothas to the length of lines and as to the number of lines capable of beingreproduced, without necessitating the readjustment of the machine.

A further object is to provide an engraving machine wherein the patternor templet carrier and the work bed will lie on parallel planes and eachoccupy the same plane at all times, the scale of reproduction beingvaried without adjusting these parts, thus insuring the maintenance ofthe proper relative levels of these parts and avoiding the necessity oftruing up the machine after each adjustment, with a resultant uniformityin the relation of the several parts during the making of any plate inits entirety.

A still further object is to provide an engraving machine which, whilepermitting the requisite minute adjustment thereof, will be soconstructed and arranged as to be reasonably rigid throughout, thusavoiding such wear of parts as would, through the presence of lostmotion, tend to impair the accuracy of the work done upon the machine.

A still further object is to provide a machine wherein the transmitterwill be so supported as to avoid undue wear, or anyvariation in itsoperation, while capable of moving freely in perpendicular lines.

A still further object is to provide in an engraving machine atransmitter, the opposite ends of which are pivotally connected to thestylus arm, and, by universal joints, to the work bed carriagerespectively, the transmitter being adapted to automatically adjustitself to the stylus arm or vice versa to compensate for the oscillatorymovement of said transmitter in conveying movement from the stylus tothe work bed, irrespective of the .direction of such movement. Harbor,in the county of Suffolk and State graving machine wherein the characterof A still further object is to provide an enthe reproduction from agiven pattern may Patented Oct. 1, 1912.-

;be distorted without varying the adjustment of the transmitter mechansm.

A still further object is to provide an engraving machine wherein thecarriage support will cause the work bed to have t e desired universalmovement on a single plane and the minimum of friction on the variousparts.

A still further object is to provide a ma-v chine wherein the frictionthroughout will be reduced to a minimum for the twofold purpose ofminimizing wear upon the various moving parts and the operation of themac ine.

A still further object is to provide a machine of this character wheremthe routing head support and the work bed will always be on the samerelative parallel planes, the' adjustment of the machine to vary thescale of reproduction not involving the readjustment of these parts;

A still further object is to provide an engraving machine embodyingtherein a' transmitter mechanism the levers of which will have uniformmotion as defined by the pattern, the scale of reproduction beingdetermined by a variance in the leverage of said levers.

A still further object is to provide an engraying machine of thischaracter wherein that portion of the transmitter mechanism carrying thestylus will always move upon the same horizontal plane,'thus eliminatingthe necessity for making any allowance for the are described by thetransmitter in conveying movement from the stylus arm to the work bed.

A still further object is to provide a ma,

chine wherein the work bed may be readilybrought forwardly of themachine from beneaththe cutter head for the purpose of inspection and asreadily returned and secured in its former position.

A still further'object is to provide a machine of this character whereinall of they parts excepting the means varying the leverage of thetransmitter levers will occupy the samerelative positions, the varianceof the ermitting ease in scale of reproduction being accomplishedwithout affecting the relation of the various other parts of the machinetoward each other. Y

A still further object is to provide in a machine of this charactermeans for adjusting the leverage of the transmitter levers which willnot be affected by the subsequent operation of the machine, thusavoiding the likelihood of a loss of adjustment during the production ofa plate.

The invention consists primarily in an engraving machine having a workbed universally movable on a single plane, a pattern support, a stylusarm, a transmitter lever system the opposite ends of which arerespectively connected to said stylus arm and to the supportof said workbed, a universal connection between said transmitter arms invention;.Fig. 2 is a rear elevation thereof with one of the transmitter leverarms broken away to disclose the interior construction and arrangementthereof; Fig. 3 is a plan view of the machine; Fig. 1 is a detailed viewof the work bed with the opened position thereof indicated in dottedlines; Fig. 5 is a detailed view of the upper part of the machineincluding the work bed, the stylus, the upper part of the transmittermechanism, and the routing head, the stylus frame being shown adjustedto that position which will give an oblique aspect to' the reproducedcharacters; Fig. 6 is a diagrammatic view of the difi'erent characterswhich may be reproduced upon the machine from a single patterncharacter; Fig. 7 is a horizontal section on the lines 7-7 of Fig. 2,and Fig. 8 is a detailed'view of the stylus and its carrying frame,showing it adjusted to form an oblique reproduction of a patternletter.-

Like letters refer to like parts throughout the several views.

In the embodiment of the invention shown in thedrawings, I have shownatlO a pedestal adapted to be secured to the floor, which pedestal issurmounted by a cylindrical column 11 of comparatively large diameter,

extending upwardly from the pedestal of the machine. This cylindricalcolumn supports all of the working parts of the machine thus not onlyimparting rigidity to the entire machine but establishing a fixedrelation of parts, not affected by the adjustment of the scale ofreproduction. Carried by the column 11 above the pedestal 10 is arectangular frame 12 having laterally extending Vways 13 therein. Movingin said ways are V-wheels 14 mounted upon axles 15. Mounted upon theV-wheels 14 is a carriage 16, the upper surface of which is providedwith V-way's 16* extending at right angles to the ways 13, and the lowersurface pi which is provided with V-tracks 17,'en-

gaging the top of the rollers 14. Mounted in the V-tracks 17 are thewheels 18 con-' nected by axles 19, and in turn surmounting them is asecond carriage-2O having downwardly presented V tracks 21 at rightangles to the tracks 17.

There are two pairs of rollers, 1 1 and 18 respectively, the axlesthereof being connected by the reaches 22 and 23.

The carriage 20 supports the arch 24 carrying the top plate 25 which isdovetailed to a second plate 26 thus permitting the lateral'adjustmentof the plate 26, the thumb screw 27 being provided to lock said plate 26in its adjusted position. The upper surface of the plate 26 is alsodovetailed and mounted therein is a plate 28 locked by means of thethumb screw 29 in its relation to the plate 26. The plate 28 ischanneled as shown in Figs. 1 and 2 and attached thereto b means of setscrews 30 is a bipart wor bed consisting of an immovable plate 31 and aface plate 32 having a pluralit of openings 33 therein and adjacent paralel straight gage lines to permit work of any size to be accuratelypositioned and secured thereto by means of ordinary dogs 34. The plate32 is pivoted at one side thereof to the plate 31 so as to be readilyswungputwardly, said plate 31 being provided with a stop 35 cooperatingwith the curved slot 36 in the plate 32, in order that, afterbeing swungupon its pivot said plate 32 may be brought back accurately to itsformer position. To prevent the displacement of the plate 32 when thesteel plate 37 is being engraved, I provide a lock, consisting of a cam38 pivoted to the plate 31 and engaging the plate 32. This construction.1

'work, and to facilitate the removal of finished work andth'esubstitution of new work in place-thereof. This construction of work bedeliminates any substantial vibration while the cutter tool is working,as the arched support 24 affords a firm support to the work. Thesuperposed carriages mount- 351 approved type of therewith. Thisarrangement of supporting wheels reduces the friction between thevarious parts and minimizes wear, thus pro longing .the life of themachine'and preservan ing the level of the work bed 32. It Wlll beobserved that, by this construction, the

plane of the work bed remains constant, any

variance in the scale of reproduction being accomplished by adjustingthe leverage of as the transmitter system of levers, the entire range ofadjustment .being accomplished i without disturbing the work bed in anyway, thus eliminating all those difficulties incidental to leveling upthe work bed after each adjustment. f

Carried by the column 11 above the work bed 32 is a block 41 havingtherein vertical ways in which is mounted the spring supi portedreciprocatory tool head 42 which is fitted with a micrometer stop 43 fordetermining the depth of cut with each application of the cutting toolto the work. The details of construction of thishead are immaterial tothe invention as any desired or tool. head may be employed.

Carried by the head 423s an abutment 44 adapted to be engaged by acrankarm 45 mounted upon the shaft 46 extending longiopposite end a crank arm47 by means of which spring is controlled by the nut 50,

the spring 49 hearing between the nut 50 and the said crank arm 47. Thelink 48 is connected to a treadle 51, convenient to the foot of theoperator. 'By this construction the pressure applied to thetool-orrouter is governed by the tension ofthe spring 49, the .action ofthe treadle 51 serving to first:

bring the tool into engagement with the work andthen so tension thespring 49 to cause the subsequent feeding movement: 5

of the tool to be under the control of this machine as'the breakage oftools wil not result from the depression of the treadle to The cutterhead and the the full extent. work bed having a definite constantrelation 85, to each other, and the plates upon which wheels through theengagementof the axles tudinally of the machine and carrying at its workis done being of substantially uniform gage, littledifliculty isexperienced in determining the moment of initial contact be- Ztween thetool and the plate and the subsequent regulation of the depth of cut,with this moment of initial contact as the basis for such regulation. ag I Machines of this type are especially Zadapted for making plates forunder surface printing wherein uniformity in the %depth of cut isdesirable, the quality of the work produced resulting from the amount ofink retained in such cuts. The'definite relation of the work bed and thecutter head tends to preserve a relation of parts which @facilitates theproduction of plates having funiform depth of cut, notwithstandingfrequent readjustments of the machine to vary the-size and style of theletters of emblems ibeing reproduced.

' The remaining mechanisms of the machine to be considered are thepattern or 'gtemplet support, the tylus and its support,

Qand the transmitter mechanism and its apipurtenances, through which thescale of rezpreaduction is determined and may be va- Supported upon theto of the column 11 @is a forwardly projecte shelf 52 forming a rigidsupport for the pattern and having -;a fixed relation to said column.Toward the rear of the shelf 52 is a plate 53 against which the formframe 54 is thrust and docked by the lock cam 55. This form framecomprises a laterally extended channel having a soft friction surface 56between the ?rear thereof and the movable block 57 which is adapted tobe thrust against said friction %surface by the thumb screws 58. Thisconfstruction of frame permits the type plates i59'to be set in theproper'position and properly spaced apart, and firmly held in thisposition so as not to be disturbed by the grepeated movement of thestylus thereover.

; Each separate pattern 59 consists of an L shaped individual platehaving a letter or &other emblem countersunk therein, the short arm ofeach plate being inserted between the block57 and the friction surfaceor pad 56 and firmly held thereagainst by the said block. Thisconstruction permits the patjtern 'to be readily set up with master typeithus materially reducing the cost of the pat- !tern and at the sametime permitting the quick substitution of, one pa tern for an- ;other.

Mounted upon the cylindrical column 11 with aclose sliding-fit, is thesleeve 60 having side bosses 61 in which is mounted, by means of pivotscrews 62, an oscillatory frame 63 open in the center to clear thesleeve 60. The pivotal support of the frame 63 permits it to movefreely, and any wear upon the pivot may be readily taken 11 by saidscrews. The frame 63 oscillates about 1 a single axis only, which axisextends laterally of the machine. ()n opposite sldes of the frame 63 arebearings 64, the axis of of mounting the transmitter levers permits.

the universal movement of the carriage 20 carrying the work bed 31 32,said arrangement of pivots forming a well known type of universal joint.

. Mounted upon the top of the column 11 is the frame 69 having laterallyextended forked arms carrying anti-friction rollers 70 at widelydivergent points, said rollers forming a support for the upper portionof the transmitter mechanism to limit the movement thereof to a singlehorizontal plane, thus eliminating any are of the stylus due to theoscillatory movement of the transmitter levers 67. Slidably mounted inthe transmitter sections 67 (which are hollow) are cylindrical sections71, having a vertical movement within the sect-ion 67. The upper end ofeach section 71 is .pivotally connected to the frame 72 by means ofpivots 73 extending parallel with the pivots 65. These pivots 73 permitthe free lateral movement of the frame 72, the longitudinal movementsthereof resulting in a slight tilting action thereof as shown in Fig. 1in dotted lines. The frame 72 is also provided with laterally extendedarms 74, upon each of which is rotatably mounted a sleeve 75 adapted toengage the anti-friction roller 70 and minimize the friction betweensaid rollers and said sleeve when the frame is moved longitudinally ofthe machine, the rollers 7 O minimizing the friction upon the lateralmovements of said frame. The sleeves 75, through their engagement withthe rollers 70, insure movement of the frame 72 in a single horizontalplane, the are described by the transmitter lever 67 being compensatedfor by the automatic adjustment of the nested sections 67 and 71.

The upper ends ofv the sections 67 of the transmitter levers areconnected by a reach rod 76 to insure unison in the movement of both ofthese levers, while. rmitting the automatic telescopic action 0 the twomembers 67 and 71, above referred to.

- The sleeve. 60 is adjustably secured relative to the column 11 bymeans of a rack 77 carried by said column, and a pinion 78 carried bysaid sleeve, provided with operating handles 79. By this construction113 will be observed that the entire frame 63 may be moved vertically ofthe column 11 and of the transmitter sections 67 thus varying theleverage of said. sections 67. To facilitate this adjustment of themachine whlch results in determining the scale of reproductlon, I

provide one of the sections 67 with a scale -as shown in Fig. 5. Thismeans of ad ustment of the fulcrum about which the lever 67 acts is onewhich may be readily 0 created and will, by reason of the absence 0vibravtion of the collar 60 and column 11, remain in the set positionwithout likelihood of a loss of adjustment through the operation of themachine.

The frame 72 is provided centrally thereof with a verticalboss 80 and adustably mount-ed therein is. a stud 81 carrying the plate 82 on which ismounted the cross head 88 having pivotally attached thereto the frame oryoke 84 carrying the mount85 for the stylus proper 86. The yoke 84 isprovided with a split collar 87 in which the stem 88 carrying-the mount85 is adjustably clamped. This construction permits the stylus to followthe pattern irrespective of the slight tilting action of the frame 72 aswell as permitting that adjustment of the machine to form obliqueletters from astraight pattern. The cross head 83 is securedto the plate82 by means of a pivot screw 89, clean ance being provided in said plate82 to permit the lateral tiltingof the yoke 84 to accomplish thatadjustment of the machine above referred to. The vertical adjustment ofthe stem or stud 81 will accomplish either the extension or condensationof the pattern in the reproduction in a manner which will 100 more fullyappear hereafter.

The operation of the herein described engraving machine is substantiallyas follows :In setting the machine for operation, the lock cam 55 isreleased and the form 105 frame 54 removed from the machine. The mastertypes are then set up in this frame -with the short arm or pendant lugthereof inserted between the block 57 and the friction pad 56. Theproper master types having been thus positioned in the form, they arespaced apart the required distance and the block 57 set up hard againstsaid short arm or pendant lug, by means of the screws 58 holding thetypes firmly in this position. The form frame 54 is then replaced uponthe shelf 52 and locked in this position. The

block or plate to be reproduced is then secured to the work bed 32 bymeans of the dogs 34, the proper alinement' of this plate being securedby means of the gage lines on the top plate.

f When it is desired to secure a reproduction of the pattern upon areduced scale, the sleeve 60 is lowered by means of the rack and pinion7 7-7 8, carryin with it the frame 63 and the collar 66. The properadjustment maybe readily procured by means of the scale on oneof thelever arms 67. It will be observed that by this adjustment the reducedor an enlarged scale according towhich side of the longitudinal centerof the nested transmitter lever the pivots 62 are positioned.

The machine having been setto form a reproduction upon a definite scale,the pattern and the work rplate are brought into such relation as toproperly positionthe reproduced matter upon the plate. When these thingshave been done, the cutter or routing tool is advanced to establish aninitial contact between the tool and the work, the tool head beingdepressed to the full extent when this initial contact is deter-. mined.Thereafter the tool head is set to advance a maximum distance with eachfull depression of the treadle 51. The stylus 80 is then moved slowlyover the pattern transmitting a movement, similar in direct-ion;

but varying in quantity, to the work bed,

thus bringing different portions thereof into operative relation to thecutting tool or router. This movement is imparted to the.

work bed through the transmitter mecha nism, consisting of the nestedlevers 67 and 71, the frame connecting the latter, and the stylussupporting frame or yoke; the connecting frame 7 2 always moving upon ahorizontal plane. The are described by the nested levers is compensatedfor by the automatic extension or contraction of said nested levers, thetilting of the levers being permitted by the pivotal connection betweenthem and the said frame, as to the lateral movements thereof, and by thepivotal connection between the stylus frame or yoke and-said frame, asto the longitudinal movements thereof, said frame being tilted only withsuch. last named movements.

-The manner of mounting the frame 63- relative to the sleeve 60, and thelevers 67 relative to said frame, permits the simultaneous movement ofsaid lever arms in lines perpendicular to each other, so as to permit auniversal movement within the limits of this mechanism. vers 67 beingconnected to' the carriage 20 by a ball and socket joint, a similarmovement is imparted to said carriage, that arrangement of wheels andtracks described permitting the free movement of the car- The lower endof the le- Y desirable, the treadle 51 is depressed to the full extentthe spring 49 sup lying that pressure necessary to automatica lyadvance.

the tool as required to make such maximum cut, the feeding of the toolthus being automatic within the limit set.

With the lateral reciprocation of the frame 72, the roller 70- will actupon the sleeves in a manner to accomplish the elongation of thebi-p'art telescopic transmitter levers, the return of these levers tonormal being throu h gravity.- The friction between the rollers 0 andsleeves 75, with a lateral movement of the frame 72, is counteracted bythe free rotation of the said rollers, and with a -l( )ngitudinalmovement thereof, by the free rotation of said. sleeves.

When it is desired to exact-1y reproduce the pattern upon either areduced or an enlarged scale, the. stylus holder 85 will be located upona plane above the plane of the point of pivotal connection of the frame.or yoke 84: with the cross head 83, in a machine so set duction from thepattern. .When the machine is so set, the reproduction from the blockpattern will be as indicated by the letter a in Fig. 6. I

If it be desiredto have the reproduction oblique as indicated by theletter Z) in Fig. 6, the cross head 83 will be tilted with the left handside thereof down and the right hand side thereof raised, the extent ofsuch tilting being governed bythe desiredangle of inclination of theheight lines of the letter or pattern. If, however, it is desired totilt the letter in the manner indicated at c, Fig. 6, the cross head 83will be tilted in the opposite direction'as shown in Figs. 5 and 8. Thisdistortion of the reproduction results from the slight lateraldeflection 0 f the transmitter mechanism due to thepivotal action of theframe or yoke 84 resulting from the slighttilting of the frame 7 2 upona longitudinal movement thereof, such pivotal movement giving a slightside thrust to said frame through the reaction from the resistanceencountered to the lateral movement of the stylus in oscillatingobliquely from the normal line of movement ofthe head 72. The directionof this reaction is determined by the direction of inclination of theframe or yoke 84., and the quantity thereof, by the degree ofinclination thereof. It will be observed that in effecting this obliquedistor tion of the letter, none of the dimensions in the reproductionare varied from the original scale reproduction.

When it is desired to condense the reproduction, as indicated at cl inFig. 6, the stud 81 is raised in the boss 80, thus raising the oint ofapplication of power from the styus relative to the frame 63 andincreasing the leverage as to the lateral movement of the frame 72, theincreased leverage as to the longitudinal movement being compensated forby the readjustment of the work bed in restoring the stylus to thestarting point upon the pattern, the said stylus havmg been advancedfrom the startin point by the are described thereby in a apting itselfto the raised position of its pivots. No such readjustment beingpossible as to the lateral movement, the increased leverage at which thestylus frame or yoke acts upon the frame 72 results in a proportionatereduction in the quantity of lateral movement of the carriage 20 underthe control of the levers 67, 71, and a consequent condensation of thereproduction produced. By the reversal of this adjustment, the extendedreproduction may be made as indicated by the letter e of Fig. 6, thelowering of the yoke 84 reducing the leverage of the levers 67, 71, andincreasing the relative lateral movement of the work bed.

If it is desired to condense or extend the reproduction throughout theentire plate, or line, the stylus 86 need not be readjusted, but if itis desired to preserve the previously fixed base line, the stylus may berestored to the starting .point of the pattern by lowering it in itsholder 85 until the stud 88 is restored to its former level.

By the use of transmitter levers having adjustable pivots intermediateof the ends thereof, the scale of reproduction may be determined orvaried by the mere adjustment of the position of these pivots withoutdisturbing the adjustment of any other parts of a the machine, and theentire rangeof adjustment may be used without disturbing the work bed inany way. This permits the work bed to be mounted upon a perfect leveland avoids the necessity for leveling u the 1 same after each adjustmentof the sea e of reproduction. This is a matter of considerableimportance, as the loss of level of the work bed would result in alackof uniformity in the depth of the cut made by the tool or router. Inunder surface work the intaglio cut retains the ink with which theprinting is done and avariance in the depth of this cut results in thesame mottled effect as would result from the use of types of diiferentheights.

The tool head, in the making of a plate, must be adjusted several timesto secure the desired depth of cut, thus making permanency in thepattern necessary. Frequent inspection and cleaning of the plate isrequired, which is provided for by the bi-part work bed, the workbearing member of which may be swung outwardly and the work removed fromunder the tool.

said work bed, a pivotal connection between the other end thereof andsaid stylus arm, a universal pivotal bearing for said leversintermediate their ends, and a tool head adapted to'be adjusted relativeto said work bed to regulate the depth of cut of the tool. 2. In anengraving machine, a work bed universally movable in a single plane, apattern support, a stylus arm, a transmitter lever system, a universalconnection between one end of said transmitter lever system and saidwork bed, a pivotal connection between the other end thereof and saidstylus arm, a universal pivotal bearing for said levers intermediatetheir ends, means adjusting said bearings longitudinally of said leversto vary the scale of reproduction, and a tool head adapted to beadjusted relative to said work bed to regulate the depth of out o thetool.

3. In an engraving machine, a work bed universally movable in a singleplane, a

. tern supportto said work bed, a universal joint between one end ofsaid lever system and said work bed, a stylus arm, a pivotal connectionbetween the other end of said lever system and said stylus arm, a framepivotally supported upon said column, a pivotal connection between saidframe and a point of said levers intermediate the ends, thereof, thepivots of said frame and said last named connection being perpendicularto each other, and a tool head adapted to be adjusted relative to thesaid work bed to regulate the depth of cut of the tool.

4.'In an engraving machine, a plurality of superposed carriages,supports therefor whereby said carriages may move perpendicularlyrelative to each other in parallel planes, a work bed rigidly mountedupon the uppermost of said carriages whereby said work bed isuniversally movable in a single plane, a pattern support, a central.-column extending between said members, a

transmitter lever system extending from adjacent to said pattern supportto said work bed, a universal joint between one end of said lever systemand said work bed, a stylus arm, a pivotal connection between the otherend of said lever system and said stylus arm, a frame pivotallysupported upon said column, a pivotal connection between said frame anda point of said levers intermediate the ends thereof, the pivots of saidframe and said last named connection being perpendicular to each other,and a tool head adapted to be adjusted relative to saidwork bed toregulate the depth of cut of the tool.

5. In an engraving machine, a plurality lever system and said work bed,a pivotal connection between the other end thereof and said stylus arm,a universal pivotal bearing for said levers intermediate their ends,means adjusting said bearings longitudinally of said levers, to vary thescale of reproduction, and a tool head adapted to be adjusted relativeto said work bed to regulate the depth of cut of the tool.

6. In an engraving machine, a work bed universally movable in a singleplane, a pattern support, a stylus arm, a transmitter lever systemembodying therein a plurality of telescopic levers, a universalconnection between one end of said levers and said work bed, meansholding the other end of said levers in a single plane, a pivotalconnection between said other end of said levers and said stylus arm, auniversal pivotal bearing for said levers intermediate the ends thereof,and a tool head adapted to be adjusted relative to said work bed toregulate the depth of cut of the tool.

7. In an engraving machine, a work bed universally movable in a singleplane, a pattern support, a stylus arm, a transmitter lever systemembodying thereina plurality of telescopic levers, a universalconnection between one end of said levers and said work bed, a rigidhead frame pivotally con nected to the other end of said levers, guidesadjacent to said frame, a projection carried by said frame cooperatingwith said guides to cause said frame to move in a single plane, pivotalconnection between said head frame and said stylus arm, a universalpivotal bearing for saidlevers intermediate the ends thereof, and a toolhead adapted to be adjusted relative to said work bed to regulate thedepth of cut of the tool.

8. In an engraving machine, a work bed universally movable in a singleplane, a pattern support, a stylus arm, a transmitter lever systemembodying therein a plurality of telescopic levers, a universalconnection between one end of said levers and said work bed,a rigid headframe pivotally connected to the other end of said levers,

mediatethe ends thereof, and a tool head adapted to be adjusted relativeto said work bed to regulatethe depth of cut of the tool.

9. In an engraving machine, a. work bed 7 "universally movable in asingle plane, a

pattern support, a stylus arm, a transmitter lever system embodyingtherein a plurality of. telescopic levers, a universal connectionbetween one end of said levers and said work bed, means supporting saidstylus arm by a universal connection with'the other end of said levers,roll-er ides adjacent to said stylus arm, anti-frictlon means movingsimultaneously with said levers and cooperating with said guides tocause one end of said levers to move in a single plane,'a

universal pivotal bearing for said levers intermediate their ends, and atool head adapted to be adjusted relative to the said work bed toregulate the depth of cut of the tool.

10. In an engraving machine, a work bed universally movable in a singleplane, apattern support, a central column extending between saidmembers, a transmitter lever system extending from. adjacent to saidpattern support to said work bed, a universal joint between one end ofsaid lever system and said work bed, a stylus arm, a pivotal connectionbetween the other end of said lever system and said stylus arm, a sleeveadjustably mounted upon said column, a frame pivotally supported uponsaid sleeve, a pivotal connection between said frame and a point of saidlevers intermediate the ends thereof, the pivots of said frame and said.

last named connection being perpendicular to each other, and a tool headadapted to be adjusted relative to said workbed to regulate the depth ofcut of the tool.

11, In an engraving machine, a work bed universally movable in a singleplane, a pattern support, a central column extending between saidmembers, a transmittersl-ever system extending from adjacent to saidpattern support to said work bed, a universal joint between one endofsaid lever system and saidwork bed, a stylus arm, a pivotal connectionbetween the other end of said lever system and said stylus arm, asleeveslidably mounted upon each of said levers intermediate the ends thereof,a pivotal connection between each'of said last mentioned levers and saidframe, the pivots of said frame and said last named sleeve beingperpendicularto each other, and a tool headadapted to be adjustedrelative to the work bed to regulate the depth of cut of the tool.

12. In an engraving machine, the combination with a work bed, a patternsupport,

and a tool head, of oscillating transmitter arms adapted to move saidwork bed uni versally, a frame adapted to move longitudinally andlaterally of the machine in a single plane,-a pivotal connection betweensaid frame and said lever arms, the pivots chine, a stylus framehavingflvertical ad.- justment in said last named frame, and a stylusarm pivotally mounted in said stylus thereof extendinglongitudinally ofthe maframe, said last named pivots extending lat-1 thereof extendinglongitudinally of the machine, a stylus frame carried by said firstmentioned frame, a cross head having ofiset bearings mounted upon saidstylus frame, means whereby said cross head may be adjusted about anaxis parallel to the axis of the pivots connecting said transmitter armswith said first mentioned frame,

and a stylus arm mounted in said cross head, the axis of said lastmentioned bearings extending laterally of the machine whereby thetilting of said cross head will give a lateral coefiicient of motion tothe transmitter arm upon the longitudinal movement of the stylus.

14. In an engraving machine, the combination with a work bed, a patternsupport, and a tool head, of: oscillating transmitter arms adapted tomove said work bed universally, a frame adapted to move longitu dinallyand laterally of the machine in a single plane, a pivotal connectionbetween said frame and said lever arms, the pivots thereof extendinglongitudinally of the machine, a stylus frame carried by said firstmentioned frame, a cross head having oil"- set bearings mounted uponsaid stylus frame, means whereby said cross head may be adjusted aboutan axis parallel to the axis of the pivots connecting said transmitterarms with said first mentioned frame, a stylus arm mounted in said crosshead, the axis of said last mentioned bearings extending laterally ofthe machine whereby the tilting of said cross head will give a lateralcoefiicient of motion to the transmitter arm upon the longitudinalmovement of the stylus,

nation with a work bed, a pattern support, a

stylus arm and a transmitter mechanism between said stylus arm and saidwork bed,

of .means for adjusting the stylus arm to vary the scale of the lateraldimension of the reproduction, and means for adjusting said stylusrelative to said transmitter mechanism whereby a lateral ,coeflicient ofmove- 'ment is imparted to said transmitter mechanism to change thedirection of the longitudinal dimension of, or impart obliquity to, thereproduction. I

16. In an engraving machine, a fixed frame havin mounted thereon aplurality of superpose carriages,said frame and the lowermost carriagehaving thereon tracks or ways extending in perpendicular lines,antifrietion devices moving in said tracks and supporting said carriagesrespectively, means connecting the devices supporting such carria gewhereb they act simultaneously and in the same egree and a work bedcarried by and fixed relative to the uppermost of said carriages.

17. In an engraving machine, a fixed frame having mounted thereon aplurality of superposed carriages, said frame and the lowermost carriagehaving thereon tracks or ways extending in perpendicular lines,antifriction devices moving in said tracks and supporting said carriagesrespectively, and a work bed carried by and fixed relative to theuppermost of said carriages, said work bed comprising a plurality ofsuperposed plurality of openings and with gage lines whereby the platebeing engraved may be accurately positioned thereon.

18. In an engraving machine, a transmitter mechanism embodying thereinan oscillating lever, universal pivotal support for said leverintermediate the ends thereof, a work bed adapted to have universalmovement in a single plane, and a universally movable stylus arm theopposite ends of said lever being connected respectively :to work bedand said stylus arm.

19. In an engraving machine, a cutter mechanism embodying therein aspring1 sus tained tool head, means advancing sai tool head to bring thetool into contact with the work, and means automatically advancing saidhead as the tool makes its out.

- 20. In an engraving machine, a cutter mechanism embodying thereina-spring sustained tool head, an abutment upon said head, a crank shafthaving an arm engaging said said abutment whereby said head may beadvanced to bring the tool into contact with the work, a second arm saidshaft, a link having an abutment thereon, a spring set between saidabutment and said last named arm, and means adapted to operate said linkwhereb the maximum movement of said link will first bring the tool intocontact with the work, and thereafter automatically feed said toolthrough the compression of said spring.

21. In an engraving machine, the combination with a work bed, a patternsupport, a stylus arm, and a transmitter mechanism the Work bed, to varythe direction of the longitudinal dimension of, or impart obliquity to,the reproduction.

In witness whereof, I have hereunto aflixed my signature in the presenceof two witnesses, this first day of September, 1910.

- WILLIAM S. EATON. Witnesses:

R. P. CHAPMAN,

I. P. CUNNINGHAM.

